redo-convoy main-mission

- add randomization to convoyed vehicle
- add randomization to the armed vehicles protecting the convoy
- add randomization to the starting spawns and routes taken on by the
convoy
- add comments incase someone wants to adjust the mission
- atm all routes are route 1 untill we get del1te's new routes :)
add convoy to mission controller

with increased weight for testing purposes
missing ;

these keep haunting me :P
too much ;

apparently that's also possible :P
Merge pull request #18 from A3Wasteland/Mainmisison_Convoy

Mainmisison convoy